Definition of Alleluia victory in English:

Alleluia victory

noun

  • (The name for) a victory said to have been gained by an army of Britons over the Saxons and Picts in 429.

Origin

Mid 18th century; earliest use found in Thomas Carte (d. 1754), historian. So called with reference to an account in Constantius of Lyon's Vita Germani (ch. 18), according to which the Britons, newly baptized and led by Germanus of Auxerre, terrified their enemy into flight with cries of ‘alleluia’.